Thank you for viewing. With BOSS's COSM modeling technology, this unit faithfully reproduces overdrive/distortion sounds from famous machines around the world. Furthermore, it is equipped with a mode that can simulate the legendary Rockman sound! You can reproduce Boston's brilliant and soaring guitar sound with this single unit. Realistically reproduces over 20 famous drive sounds with BOSS's unique COSM technology. Built-in Rockman simulator: Recreates that sound of 80s American rock. 2-channel design allows for seamless switching between clean and drive sounds. Equipped with a memory function to save your favorite sounds. Suitable for live performances, home recording, and practice. Condition: ・Operation confirmed (no problems) ・Minor scratches on the exterior, but overall in good condition. ・Battery/AC adapter powered (adapter not included)